Hi everyone,
I have recently been heavily involved with this subject, I recently bought an EQ8R pro, but I have been predominantly a celestron user.
There is very little information out there about mixing systems, I did after a lot of trial and error get my starsense to work with the skywatcher, but the WiFi module does not work.
I have found the program from skywatcher to be very primitive, I have found for the starsense I must retain the use of the handset, I have tried many programs like celestrons sky portal, stellarium, and NINA, none of them point accurately, they are always off, not by much but enough to make life difficult, the handset hits the mark every time, They all work but there seems to be some kind of offset difference.
I now use gs server with nina, but still use the handset to find my targets, the tradeoff is worth it, starsense saves me a huge amount of time, setting up is really quick.
I found I did need some patience but it works, but finally I can confirm celestrons WiFi does not work, it will not recognise the scope mount.